Bug#533077: linux-image-2.6.26-2-486: on an idle system /dev/random gets depleted very quick

[Folkert van Heusden <folkert@vanheusden.com>]

> > Package: linux-image-2.6.26-2-486
> > Version: 2.6.26-15
> > Severity: normal
> > On an idle system with nothing running except sshd, getty and 1 bash shell (1 user logged in - myself), the entropy buffer of 
> > /dev/random gets depleted very quick:
> > zolder:/tmp# ./a.out ; while true ; do echo `date` `cat /proc/sys/kernel/random/entropy_avail` ; sleep 1 ; done0
> [...]
> Now add strace to those commands.  Do you see the problem?

Nope, works as expected:
a.out
-----
open("/dev/random", O_WRONLY)           = 3
brk(0)                                  = 0x87a4000
brk(0x87c7000)                          = 0x87c7000
ioctl(3, RNDADDENTROPY, 0x87a4008)      = 0

cat /proc/sys/kernel/random/entropy_avail
-----------------------------------------
open("/proc/sys/kernel/random/entropy_avail", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(3, "701\n"..., 32768)              = 4
write(1, "701\n"..., 4701
)                 = 4
read(3, ""..., 32768)                   = 0




Folkert van Heusden

-- 
MultiTail er et flexible tool for å kontrolere Logfiles og commandoer.
Med filtrer, farger, sammenføringer, forskeliger ansikter etc.
http://www.vanheusden.com/multitail/
----------------------------------------------------------------------
Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com